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JEE Main 2023 (24 Jan, Shift 1) · Electric Charge & Coulomb's Law

Electric Charge & Coulomb's Law question from JEE Main 2023 (24 Jan, Shift 1)

Q40JEE Main 2023 · 24 JAN · SHIFT 1Easy

Electric Charge & Coulomb's Law

If two charges q ${}_1$ and q ${}_2$ are separated with distance 'd' and placed in a medium of dielectric constant K. What will be the equivalent distance between charges in air for the same electrostatic force?

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Answer: (a)

In medium $F = \dfrac{kq_1q_2}{K d^2}$ ; in air $F = \dfrac{kq_1q_2}{d'^2}$ .
$d' = d\sqrt{K}$
So the answer is (a) $d\sqrt{K}$ .

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